1. difference of microspore mother cell, microspore, pollen (2answer) 2. difference of megaspore mother cell, megaspore, embryo sac (2answer)​

1) the mayans built pyramids just like the egyptians. the mayans also used hieroglyphics like them.2) power was passed down by family. for example, if the father dies, the son would be the next king.3)they both built pyramids for their structures.4)the main crop for the mayans was maize.5)they also grew manioc, beans,  squash,  amaranth, and chile peppers.

The direction a chemical reaction occurs is represented by an arrow 

Other organisms can change their behavior to take the place of the plants in the ecosystem.

The vascular system